Computer modelling of the dynamic response of viscoelastic vibroisolators

Title:

Computer modelling of the dynamic response of viscoelastic vibroisolators

Creator:

Rongong, Jem Athing and Kazakoff, Alexander Borisov

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:18ffc21e-cc39-4be9-9684-9bfa01722022
uuid:18ffc21e-cc39-4be9-9684-9bfa01722022

Subject:

computer modelling, viscolelastic materials, shock-vibration loading, and dynamic response

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The paper investigates ways to model the response of vibro-isolation mounts that utilise viscoelastic materials. Simple models based on linear and nonlinear static stiffness are developed. Dynamic response is approximated through appropriate scaling of the viscoelastic Young's modululs and use of the measured material loss factor. The approach is validated using cylindrical mounts made of polyurethane. The response of a 68 kg mass supported by two mounts and subjected to two different high-amplitude shock loads is predicted. Measured and predicted behaviour correlate closely for the nonlinear model while the linear model gives a reasonable representation. It is noted that the sensitivity of such mounts to temperature is high: the change in response associated with a temperature excursion of 10 °C is significantly greater than the inaccuracy involved with using the linear model. and Obsahuje seznam literatury

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

19-30

Source:

Engineering mechanics: international journal for theoretical and applied mechanics | 2006 Volume:13 | Number:1

Harvested from:

CDK

Metadata only:

false